migration of old contacts to a new Zimbra server

Hi all, I have a really big problem here.. :/
I was using zimbra and that was going very well, but last week i had a problem with ldap, it didnt start, I tried many of solutions I found here, no one works and I couldnt get zimbra stopped for more time, then I moved all the system to another partition and reinstalled zimbra...
Now it is working again, but I need to move back all the contacts, users, lists, old emails to this new system..
If you can help me I'll thank you all, and if some more information is necessary to find a solution just ask and I post here..
Sorry, I'm 13 years old and don't know much about linux or its commands, then a easy script and solution will be very good.. =)